Disc springs — Part 2: Technical specifications

This document specifies two different grades of disc springs. Grade A defines basic requirements of disc springs for static applications with low and moderate performance. Springs manufactured according to Grade A are not used for dynamic applications. Grade B defines requirements on disc springs especially used for dynamic applications and high performance static applications. Disc springs according to Grade B ensure a better quality by higher demands on manufacturing processes and tolerance requirements. Grade B includes graphs showing the guaranteed fatigue life such as a function of stress.

Rondelles ressorts — Partie 2: Spécifications techniques

General Information

Status
Published
Publication Date
19-Sep-2018
Technical Committee
Drafting Committee
Current Stage
9093 - International Standard confirmed
Completion Date
12-Dec-2023
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ISO 19690-2:2018 - Disc springs
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INTERNATIONAL ISO
STANDARD 19690-2
First edition
2018-09
Disc springs —
Part 2:
Technical specifications
Ressorts à disques —
Partie 2: Spécifications techniques
Reference number
ISO 19690-2:2018(E)
©
ISO 2018

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ISO 19690-2:2018(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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Published in Switzerland
ii © ISO 2018 – All rights reserved

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ISO 19690-2:2018(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and units . 2
5 Dimensions and designation . 3
5.1 General . 3
5.2 Disc spring groups . 5
5.3 Dimensional series . 5
6 Grade A — Basic performance requirements for static applications .5
6.1 Material . 5
6.2 Manufacturing process. 5
6.3 Permissible stresses . 6
6.4 Presetting . 6
6.5 Surface condition and corrosion protection . 6
6.6 Tolerances . 7
6.6.1 Thickness . 7
6.6.2 External- internal diameter and coaxiality . 7
6.6.3 Free height. 8
6.6.4 Spring load .
...

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